All sunglasses are designed to reduce the brightness of sunlight and harmful ultra violet rays. But different types stalka, their color and technology limited light and protect to varying degrees.Colors and shades of the Sunny glasses. The colors and shades of sunglasses down:
- How much visible light reaches the eye
- How well you see other colors
- How you see contrasts
There are a few basic rules that can help you in choosing the color of sunglasses. In any sport or activity in which you are exposed to bright sunlight you need sunglasses that block most of the light as brown, green or gray lenses.
If the day is not much sun can also consider lighter colors and shades glass. The lighter shades glasses offer less protection than the brightness of the light, but provide better contrast, making them an excellent choice for all kinds of sports, especially winter sports and cycling.
If you prefer lighter shades of colors glasses make sure that the distortion of color is not a problem, for example when driving.
Below you can see a table with the main colors of glass and their characteristics and purpose:
|COLOUR, NUANCE||CHARACTERISTICS AND PURPOSE|
|Yellow, orange||Provide less protection of brightness, but are excellent in terms of moderate to low light conditions. They provide excellent depth perception, making them ideal for skiing, snowboarding and other winter sports. They also enhance the contrast in conditions with low light.|
|Pink, red, amber||These shades make the world look brighter. They provide excellent visibility in low sunlight and increase contrast. They also increase the visibility of objects of blue and green backgrounds, which makes them an excellent choice for driving.|
|Brown, dark amber||Blocked large amount of sunlight and increase the contrast and sharpness of vision. Particularly useful are to improve the counter or grass against the sky.|
|green||Povivashat contrast, also retain color balance|
|gray||The gray color is neutral, which means that such glasses may limit the full brightness of the light without yavat distorted colors. Gray shades glasses are designed to reduce glare of the sun and reduce eyestrain in moderate to very bright conditions.|
Types of Glass and Technologies
Polarized glasses-When the light is reflected from flat surfaces such as water, snow, sand glass, it is reflected perpendicularly to the surface. These reflected glare can be very bright and intense and can cause increased irritation, fatigue and even in some cases limited vision. When polarized glasses use polarized horizontally potredeni micro crystals that block vertical light and protect eyes from these dazzling glare. Polarized glasses are particularly suitable for water sports, cycling, winter sports and more. It should be noted however that polarized lenses offer no additional UV protection.
Gradient lenses-Gradient lenses are lenses that are tinted from the top down, so that the top of the glass is dark. This type lenses are suitable for driving because they protect eyes from sunlight overhead while allowing more light to enter through the bottom of the glass so that you can clearly see the dashboard.
Double-gradient lenses-These are glasses that are tinted by both top down and bottom up. Top and bottom of the lenses are darker, and the middle glass in a lighter shade. Double-gradient lenses are a great choice if you want sunglasses that are not too dark, but at the same time protect the eyes as well of direct sunlight and reflected from vsetlina in the sand, water and others. This type of glass is very suitable for water sports.
Photochromic lenses-this glass adapt automatically to changing light intensity and thus protect you under different conditions. Photochromic lenses become darker when the light is brighter and brighter when the light is reduced in intensity. There are several specific peculiarities of this type of lenses: photochromic process does not happen overnight, also may be needed more time to work in cold conditions. It should also be noted that the photochromic process does not work when you are inside the car because the change in shades of glass is activated by harmful UVB rays of the sun, but are stopped by the windshield.
UV protection and categories of protection
Besides being a great fashion accessory, sunglasses protect the eyes from various forms of ultraviolet light, increase optical clarity in bright sunlight, while reducing the risk of eye damage.
Slanchevit glasses are essential for people who are exposed to high levels of ultraviolet (UV) light during activities such as winter sports, water sports and driving. When you buy sunglasses, one of the most important things you need to make sure that there is 100% ultraviolet protection. Although the sun is far from Reset, ultraviolet rays emitted can seriously impair our vision.
Different shades of lenses reduce visible light differently and to varying degrees osiguvyavat protection against glare of the sun. In order to determine to what extent given sunglasses block and miss the sunlight protection stalkata classified in categories from 0 to 4. Below we present a table of categories by European standards:
|0||Miss between 80% – 100% solar vsetlina.
Glass without color or very light shade.
|Suitable for activities indoors or in dark and cloudy weather.|
|1||Miss between 43% – 80% of solar vsetlina.
Glass in bright shade.
|Suitable conditions for in lower brightness and reduced sunlight|
|2||Miss between 18% – 43% of solar vsetlina.
Moderately tinted windows.
|Suitable for moderate sunlight. This katgoriya glasses are now suitable for the summer months.|
|3||Miss between 8% – 18% of solar vsetlina.
Dark shades and colors glasses.
|They are suitable in very bright sunlight vsetlina.|
|4||Miss between 3% – 8% of solar vsetlina.
Very dark shades.
|Suitable only for exceptional brightness and sunlight. Not recommended while driving|